Clinical trials
Recruiting Observational trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
4,280 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 19 |
| 2001 | 24 |
| 2002 | 25 |
| 2003 | 25 |
| 2004 | 28 |
| 2005 | 31 |
| 2006 | 27 |
| 2007 | 40 |
| 2008 | 31 |
| 2009 | 40 |
| 2010 | 50 |
| 2011 | 49 |
| 2012 | 46 |
| 2013 | 74 |
| 2014 | 80 |
| 2015 | 97 |
| 2016 | 119 |
| 2017 | 110 |
| 2018 | 120 |
| 2019 | 159 |
| 2020 | 196 |
| 2021 | 259 |
| 2022 | 315 |
| 2023 | 453 |
| 2024 | 580 |
| 2025 | 679 |
| 2026 | 520 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Recruiting | 4,280 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Mayo Clinic | 158 |
| M.D. Anderson Cancer Center | 117 |
| National Institute of Allergy and Infectious Diseases (NIAID) | 74 |
| Memorial Sloan Kettering Cancer Center | 73 |
| National Cancer Institute (NCI) | 71 |
| University of California, San Francisco | 62 |
| University of Colorado, Denver | 62 |
| Massachusetts General Hospital | 54 |
| Boston Children's Hospital | 51 |
| Duke University | 50 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Neoplasms | 180 |
| Breast Neoplasms | 127 |
| Prostatic Neoplasms | 86 |
| Lung Neoplasms | 79 |
| Heart Failure | 71 |
| Obesity | 68 |
| Cardiovascular Diseases | 62 |
| Pancreatic Neoplasms | 57 |
| Alzheimer Disease | 55 |
| Colorectal Neoplasms | 54 |
Trials
Showing 1 to 25 of 4,280. Each trial links to its page on Pharma Observatory.
4,180 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.